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Accrued Sales Taxes and Regulatory Fees	12 Months Ended
Accrued Sales Taxes and Regulatory Fees	Dec. 31, 2015
Payables and Accruals [Abstract]
Accrued Sales Taxes and Regulatory Fees	Accrued Sales Taxes and Regulatory Fees Included in accrued sales taxes and regulatory fees are (i) certain estimated sales and use taxes, regulatory fees and (ii) sales taxes and regulatory fees collected from customers that are to be remitted to taxing authorities. Our accrual as of December 31, 2015 includes estimates for taxes due where we plan to proactively contact various taxing authorities and voluntarily disclose potential sales and use tax liabilities. Actual payments may vary from our estimates. Accrued sales taxes and regulatory fees as of December 31, 2015 and 2014 are $441,000 and $444,000, respectively.